/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlinePartyInterface.h
Get the primary user's join data
join data provided by the primary user for this join request
virtual [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< const [FOnlinePartyData](API\Plugins\OnlineSubsystem\Interfaces\FOnlinePartyData) > GetSenderJoinData() const